AK Electrical Administrator –
Linework Exam Questions And Correct
Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
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1.
What is the minimum approach distance for qualified lineworkers working
near 15 kV lines?
A. 2 feet
B. 3 feet
C. 4 feet
D. 5 feet
Rationale: OSHA and industry standards set a 4-ft MAD for up to 15 kV.
2.
Which device is used to protect distribution lines from overcurrent events
caused by faults?
A. Recloser
B. Fuse cutout
C. Breaker
D. All of the above
Rationale: All listed devices provide overcurrent protection at various
system points.
3.
,A guy wire must be insulated when installed across:
A. Roads
B. Railroads
C. Communication lines
D. Parking lots
Rationale: Guy wire insulators prevent dangerous potentials from traveling
into comms systems.
4.
What is the typical frequency of AC power in North American utility
systems?
A. 25 Hz
B. 60 Hz
C. 100 Hz
D. 120 Hz
Rationale: Standard utility frequency is 60 Hz.
5.
Which conductor configuration minimizes corona on high-voltage lines?
A. Single-strand copper
B. Bundled conductors
C. ACSR only
D. Parallel bare wires
Rationale: Bundled conductors reduce electric field intensity and corona
formation.
6.
What must be done before grounding a de-energized line?
A. Test weather conditions
B. Test the line for absence of voltage
C. Check crew size
D. Contact customers
Rationale: Always test-before-touch to ensure the line is de-energized.
7.
, The primary purpose of a line recloser is to:
A. Regulate voltage
B. Automatically clear temporary faults
C. Ground the system
D. Reduce harmonics
Rationale: Reclosers isolate temporary faults to maintain service
continuity.
8.
What is the typical phase-to-phase voltage of a 7.2/12.47-kV system?
A. 7.2 kV
B. 12.47 kV
C. 24.9 kV
D. 14.4 kV
Rationale: 7.2 is phase-neutral; 12.47 kV is phase-to-phase.
9.
A bucket truck operator must maintain a minimum clearance of _____ from
energized 34.5-kV conductors.
A. 4 ft
B. 6 ft
C. 10 ft
D. 12 ft
Rationale: OSHA minimum for 34.5 kV is 10 ft.
10.
A transformer with a 5-kVA rating and 120-V secondary can deliver what
maximum current?
A. 20 A
B. 41.7 A
C. 60 A
D. 83.3 A
Rationale: I = 5000/120 ≈ 41.7 A.
Linework Exam Questions And Correct
Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
1.
What is the minimum approach distance for qualified lineworkers working
near 15 kV lines?
A. 2 feet
B. 3 feet
C. 4 feet
D. 5 feet
Rationale: OSHA and industry standards set a 4-ft MAD for up to 15 kV.
2.
Which device is used to protect distribution lines from overcurrent events
caused by faults?
A. Recloser
B. Fuse cutout
C. Breaker
D. All of the above
Rationale: All listed devices provide overcurrent protection at various
system points.
3.
,A guy wire must be insulated when installed across:
A. Roads
B. Railroads
C. Communication lines
D. Parking lots
Rationale: Guy wire insulators prevent dangerous potentials from traveling
into comms systems.
4.
What is the typical frequency of AC power in North American utility
systems?
A. 25 Hz
B. 60 Hz
C. 100 Hz
D. 120 Hz
Rationale: Standard utility frequency is 60 Hz.
5.
Which conductor configuration minimizes corona on high-voltage lines?
A. Single-strand copper
B. Bundled conductors
C. ACSR only
D. Parallel bare wires
Rationale: Bundled conductors reduce electric field intensity and corona
formation.
6.
What must be done before grounding a de-energized line?
A. Test weather conditions
B. Test the line for absence of voltage
C. Check crew size
D. Contact customers
Rationale: Always test-before-touch to ensure the line is de-energized.
7.
, The primary purpose of a line recloser is to:
A. Regulate voltage
B. Automatically clear temporary faults
C. Ground the system
D. Reduce harmonics
Rationale: Reclosers isolate temporary faults to maintain service
continuity.
8.
What is the typical phase-to-phase voltage of a 7.2/12.47-kV system?
A. 7.2 kV
B. 12.47 kV
C. 24.9 kV
D. 14.4 kV
Rationale: 7.2 is phase-neutral; 12.47 kV is phase-to-phase.
9.
A bucket truck operator must maintain a minimum clearance of _____ from
energized 34.5-kV conductors.
A. 4 ft
B. 6 ft
C. 10 ft
D. 12 ft
Rationale: OSHA minimum for 34.5 kV is 10 ft.
10.
A transformer with a 5-kVA rating and 120-V secondary can deliver what
maximum current?
A. 20 A
B. 41.7 A
C. 60 A
D. 83.3 A
Rationale: I = 5000/120 ≈ 41.7 A.
